Radyne ComStream TIERNAN SE4000, Инструкция по установке и эксплуатации

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SE4000 MPEG-2 Contribution Encoder Using the Front Panel
01-0934-401-B 3-23
Front Panel Menu Summary
Command Function Options/Response Format
Modulation
Power
Sets the output transmit power of
the SE4000 modulator.
-25.0 to -5.0 dBm
default: -5.0 dBm
Rate Control Sets whether the modulator
output is calculated based on
data rate or symbol rate.
? Auto – Either Data Rate or Symbol Rate may be
entered – the other parameter is automatically
calculated.
? Symbol Rate – Symbol rate in entered – Data Rate
is calculated and is read only.
? Data Rate – Data rate in entered – Symbol Rate is
calculated and is read only.
Sets the modulator carrier
frequency.
52.0 to 88.0 MHz, 104 to 176 MHz, 950 to 2050 MHz.
default: 70.0 MHz
Carrier Freq
Additional Information: The acceptable frequency range is implemented with a band pass
filter that filters out all frequencies below 52000000 Hz and above 88000000 Hz (similar
for 140 MHz range and L-Band).
When selecting a carrier frequency, take into account the satellite bandwidth required for
transmission. If a carrier frequency is selected is too close to either end of the valid range,
the modulated carrier may be clipped by the pass band filter. For information on
calculating the satellite bandwidth, refer to the Main>Output>Sym Rate parameter.
Spectrum
Inversion
Used to instruct the modulator to
invert, or not invert, the
modulated IF output spectrum.
Inverting the IF output spectrum
eliminates spectral inversion in
the RF chain caused by selecting
lower side-band images of an
upconverted carrier.
? normal – modulated IF output is not inverted
(default)
? inverted – modulator inverts the IF output spectrum
Rolloff Sets the baseband filter rolloff
factor of the internal modulator.
This parameter must match the
demodulator filter rolloff
? .35 (default) normally used for DVB compliant
demodulators
? .20
? .25
ASI Packet Size Sets the ASI output. ? 188 byte packet
? 204 byte packet
? 204 byte packet with Reed-Solomon encoding
Main>Status
Current Lists the current faults Current faults are those presently faulted
History Contains a log of historical faults ? LIST - Due to memory limitations, the first 50 faults
occurring after a clear are saved along with the last
50 faults that have occurred
? Clear – Completely clears the fault log. Erases all
fault history . Note: Does not clear fault relay.
Relay Controls and displays the fault
relay status
? Clear – Completely clears the fault log. Erases all
fault history.